Hi, don't know if I would qualify but I'm a Byzantine Catholic (who hasn't posted here for a while, so hi everyone! 
I definitely believe in purgatory (as did one of my favorite writers, C.S. Lewis (an Anglican)).
I don't believe in the caricatures of purgatory sometimes found on the Internet (by both non-Catholics and ill-informed Catholics). I always think of it as being sort of like the cleansing shower you are required to take before you're allowed in the public swimming pool, to get rid of all the cooties you brought with you. 
Hope that helps! 
Thanks for your response, theistgal. What is the difference between Greek Catholic and Byzantine Catholic? I always thought they were the same thing, but obviously not?
Usually when we hear Greek Catholic and Byzantine Catholic online it refers to this;
Ruthenian Byzantine Catholic Church ---- Byzantine Catholic
However in Slovakia the sister church is referred to as Greek Catholic.
Ukrainian Greek Catholic Church--- "Greek Catholics"
In order to not confuse yourself they are the same thing, Greek Catholic and in fact you can even call a person who attends the Ruthenian churches Greek Catholic. Hence lies in the confusion, the Ruthenian Byzantine Catholic Church of the USA (as I believe is the full name, someone correct me if I'm wrong) has preferred to drop the "Ruthenian" from its name in order to appear less ethnic (whatever that means, probably best discussed in its own thread). But the funny thing is back home in Slovakia the sister dioceses clearly have the title Greek Catholic in their names "Greckokatolicka."
So there really is no difference between the term Byzantine Catholic and Greek Catholic
However the differences between the Ruthenian Byzantine (Greek Catholic) Church and the Ukrainian Greek Catholic Church are;
different tone systems
different translation of the liturgy
Those are the two biggest differences beside ethnic differences.